Bow sight



April 24, 1956 R. F. WILLIAMS BOW SIGHT Filed April 27. 1954 Roger E Williams IN VEN TOR.

United States Patent Aice e Bow SIGHT v Roger F. Williams, New York, N. Y. Application April l27, 1954, senat No. 425,834 2 claims. (c1. 33-46) This invention relates generally toarchery equipment, and pertains more particularly to an improved form' of bow sight.

yplates together to clamp the window therebetween, the

` purpose of this construction being presently apparent.

A primary object of this invention is to provide an improved form of bow sight which may be readily and quickly adjusted to suit the needs of the individual archer and which will, when once adjusted, for all practical purposes, obviate the necessity for further adjustment thereof.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein ,like numerals refer to like parts throughout, and in which:

Figure 1 is a front elevational view showing a portion of a bow with the improved sight mounted thereon;

Figure 2 is a horizontal section taken substantially along the plane of section line 2 2 in Figure 1; and

Figure 3 is a perspective view of the sight window.

Referring now more particularly to the drawings, reference numeral 10 indicates an archery bow which is provided with the usual hand grip portion 12 and the arrow supportmember 14. The improved bow sight consists essentially of an elongated mounting plate or strap 16 which has its opposite ends secured to the bow above the hand grip portion 12 by means of tape 18, a clamp or any other suitable means. A pair of bracket ears 20 and 22 are secured to the mounting plate adjacent opposite ends thereof and extend laterally therefrom for the purpose of mounting the elevation adjusting screw 24 and the guide rod 26 thereon parallel relative to said mounting plate. In this respect, it will be noted that the adjusting screw has a headed end portion 28 bearing against the bracket ear 22 and has at its opposite end a knurled knob member 30 bearing against the bracket ear 20. In this manner, the adjusting screw is journaled in the bracket ears and is held against longitudinal displacement. Similarly, the guide rod 26 is provided with enlarged headed end portions 32 and 34 at its opposite ends cooperating with the bracket ears so as to aiiix the guide rod with respect thereto.

An adjusting block 36 is mounted on the adjusting screw and the guide rod and for this purpose, it is to be noted that the block is provided with a pair of parallel bores, one of which is threaded for reception of the adjusting screw and the other of which is smooth for sliding engagementon the guide rod 26. Therefore, manipulation of the knob 30 of the adjusting screw will effect movement of the mounting block 36 parallel with the mounting plate and bow between the bracket ears 20 and 22, as desired.

The sight window is indicated generally by the reference character 38 and will be seen to consist of a plate of transparent material, such as clear plastic or the like, and it will be noted that this window is provided along one edge thereof with an enlarged notch 40 disposed substantially medially along that edge and a pair of slots 42 and 44 on opposite sides of the notch 40. A pair of clamping plates 46 and 48 are disposed 011 opposite sides of the window and fasteners 50 and 52 cooperate therewith to urge the The fasteners 50 and 52, of course, extend through the slots 42 and 44, respectively.

The plate 46 is provided with a lateral arm 54 having a longitudinally extending elongated slot 56 therein through whichv the fastening members 58 and 60 project. The fastening member 58 may be in the form of a screw threadedly engaged in the mounting block 36 and the fastener 60 is in the form of a screw also, but is provided with the wing portions 62 for ease in manipulation. The

`fastener 60 isalso received within a tapped hole in the mounting block.

The outer edge 64 of the sight window is disposed at an angle of approximately 18 to the inner edge 66 thereof, and a vertical line 68 is scribedl in the surface of the Window in parallelism with the outer edge 64, as will be readily apparent. A horizontal baseline 70 is scu'bed in the surface of the plastic window and extends thereacross from the region of the notch 40.

In operation, the block 36 is positioned substantially midway between the bracket ears 20 and 22, and the unit is placed on the bowV so that the horizontal line is approximately at the right elevation for the range chosen by the archer. This will bethe 40 or 5() yard range, depending on the 'cast of the bow. The unit is then taped securely to the back of the bow by wrapping tape 18 around the opposite end portions of the mounting plate and the bow, and when thus securely mounted,'the unit is then ready for proper adjustment to line and cant. The adjustments for line and cant are made simultaneously by loosening the fasteners 50 and 52 and sliding the sight window back and forth and at the same time, tilting it in the desired direction until the vertical line 68 is disposed vertically with the bow canted at the angle most natural to the user.

This, in most cases, will be approximately 18 or therev abouts.

Since-the slots 42 and 44 are of substantially greater width than the diameter of the fasteners 50 and 52, quite a large degree in variation of tilt may be attained from the 18 setting to which the unit is built as positioned as shown in Figure 1. Since some archers hold the bow with substantially no cant at all, a further threaded or tapped hole 72 is provided in the mounting block 36 for reception of the fastener 60 so that the initial cant of the assembly is zero.

Further adjustment of the line 68 may be made by shifting the arm 54 back and forth with respect to the mounting block 36, this being accomplished by loosening the fastening means 60, the fastening means 58 being loosely engaged with the arm 54 at all times. Adjustment is correct when the Vertical line 68 is vertical to and in line with the target. This feature assures the archer of a consistent cant.

It will be noted that the arm 54 is mounted on the fastener members 58, 60 obliquely of the screw 24 and guide rod 26 so that the window 38 can be adjusted longitudinally relative to the bow 10 parallel therewith -and horizontally with the bow 10 canted edgewise as shown in Figure l.

The various short horizontal lines 74 are scribed on the sight window to correspond to any arbitrarily chosen increment of range, say, 10 yards. Since the cast of each bow is different, and further, since the weight and resistance of different arrows also vary, it is not intended to originally provide the short horizontal lines 74 inasmuch as they may be correctly positioned by the individual user by means of first marking the sight window and, by trial and error, determining the correct position for the various horizontal lines and then scribing them on the sight window.

Slight variations in elevation which will be required j ratepteaapr. 24, 195,6

when a bow string is changed or the weight of the arrows is changedma'y 'be""rna'de b3/manipulating the"adjustng screw 24.

The provisiontof the vertical line 68 is an extremely important'feature of `thisinveiition inasmuch as`it enables an archer tolign'this line verticallytofthus 'assur'e`him ofthe proper cant at all times,which enables very accurate shooting.

'From the foregoing, the construction and operation of the'device will lbe readily`un'derstood, and'futherzexplanation-iisbelievedtobe unnecessary. IHowever, since numerous modifications an'd changes will readilynoccur to those skilled in the. art, it is not desired to limit. the invention to the exact constructionLshown and described, an'd accordingly, all suitable modifications and equivalents may be resorted tofflling withinthe scope f 'the appended claims.

`What is claimed as new is asfollows:

`1. An archery bow 'sight comprising an elongated mounting, plate adapted to`be attached to an-ar'cheryfbow above thehan'dlefportion thereof parallel'therewith, a pair of laterally projectingbracket ears secured adjacent the opposite ends `of said mounting plate, a 'threaded elevation adjusting screw extending between and journaled in said bracketfears parallel with said mounting plate, an elongated guide rodsecured to said bracket ears .and parallel to said screw, a carrier block, sai'd'block'having an internally threaded bore receiving said screw and a second bore parallel thereto 4receivingsaid guide rod whereby said block is adjustable`longitudinally yof said mounting plate by said screw and parallel with said bow, a transparent sight window, an arm secured at oneend to said window, said arm having an elongated slot therein, a pair of fastening members secured to said block 'and projecting through the Vslot-insaid arm and retaining the arm in oblique position relative to said screw and rod for "adjustment of I`said window rby said Arblock "parallel with said bow and horizontally by said arm when the bow is canted edgewise out of the vertical.

2. A bow sight comprising an elongated mounting plate adapted to be mounted on a bow above the handle portion thereof, a carrier block means mounting said plate for longitudinal movement onsidblock, a pair of fastening members secured to said-block, anelongated arm having a longitudinal slot therein receiving said fastening members, a sheet of` transparent material'.having:opposite side edgesdisposed infacute .angular relation, said sheet of material being notched at a pointsubstantiallyfmedially of one edge andfbeingiprovidedwithra;pair of slots disposed on opposite sides of the notch, one end of said arm projecting into the notch in said sheet and having a clamp ing plate secured thereto extending generally parallel to said one edge of the sheet and overlying one facethercof,

va second clamping 1plate overlying sar'dsheetioppo'sitely of therst clamping plate, 'apair of fasteningelements projecting through the slots in said sheet. and urging sid clamping plates together to frictionally hold Athe Asheet, and the sheetihavingia verticalfbaseline scribed'therein parallel.to and adjacenty its Vother edge.

3References' Citcd irr thef filer-of" this' patent UNITED STATES PATENTS 2,562,187 fHamm .i- .luly3,l,l 1951 Y2,574,599 Stiebert Novi-13,1951

vFOREIGN PATENTS 12,238 `Great Britain 1909 'OTHER REFERENCES Page 155 offPopular Science, Marchl945. 

